diff --git a/pika-build-config/lto.sh b/pika-build-config/lto.sh
index 3ef9aaa42..0de90cfd1 100644
--- a/pika-build-config/lto.sh
+++ b/pika-build-config/lto.sh
@@ -1,5 +1,5 @@
-export PIKA_PACKAGE_VERSION="6.6-1"
-export PIKA_PACKAGE_NAME="zope.testrunner"
+export PIKA_PACKAGE_VERSION="0.16.20"
+export PIKA_PACKAGE_NAME="adequate"
 export PIKA_PACKAGE_PATCH=false
 export PIKA_REBUILD=false
 export PIKA_REBUILD_VERSION="b0"